Locking device for firearm stocks



Sept. 28, 1965 A. SEIDERMAN LOCKING DEVICE FOR FIREARM STOCKS 2 Sheets-Sheet 1 Filed Sept. 24, 1964 INVENTOR. ABE SE DERMAN Sept. 28, 1965 A. SEIDERMAN LOCKING DEVICE FOR FIREARM STOCKS 2 Sheets-Sheet 2 Filed Sept. 24, 1964 INVENTOR. ABE SEIDERMAN United States Patent 3,208,178 LOCKING DEVICE FOR FIREARM STOCKS Abe Seiderman, Coral Gables, Fla., assignor to Universal Firearms Corp., Hialeah, Fla., a corporation of Florida Filed Sept. 24, 1964, Ser. No. 398,859 3 Claims. (Cl. 42-71) This invention in general relates to firearms and more particularly to an adjustable means for securing the muzzle end of the stock of a firearm to the barrel thereof.

Prior devices for securing the forward end of a firearm stock to the barrel thereof are usually in the form of a band or clamp means for retaining the forward end of the stock and the barrel together in secure longitudinal alignment. This construction is complicated and dependent on close manufacturing tolerances of the parts with resultant high cost. Firearm stocks are usual-1y made of wood, and the engagement of the barrel in the stock is subject to severe shock forces as well as expansion and contraction of the latter, which results in undesirable looseness of the elements. Furthermore, prior firearms are devoid of simple adjustment means for eliminating undesirable end play between barrel and stock.

The present invention overcomes the above objections and disadvantages in a firearm by the provision of a sleeve and a collar means adjustably interlocked with the stock for firmly securing the outer end portion of a stock to the barrel in proper alignment and is a principal object of the invention.

A further object of the invention is the provision of a sleeve positioned around a firearm barrel having a flange means for engaging the inner end portion of a stock including an adjustable collar means for urging and securing the stock and barrel in tight longitudinal engagement.

Another object of the invention is the provision of a sleeve and a coaxial collar means on the barrel of a firearm for securing the outer end portion of the stock thereof including an adjustable screw means for urging the barrel and the stock into secure longitudinal and transverse alignment.

These and other objects and advantages in one embodiment of the invention are described and shown in the following specification and drawings, in which:

FIG. 1 is a side elevation of a carbine type rifle in reduced scale showing the locking device for securing the barrel to the stock.

FIG. 2 is a fragmentary bottom plan View of the locking device shown in FIG. 1, in normal scale.

FIG. 3 is a fragmentary enlarged cross sectional view taken through section line 3-3, FIG. 2.

FIG. 4 is an enlarged cross sectional view taken through section line 44, FIG. 1.

FIG. 5 is an enlarged cross sectional view taken through section line 55, FIG. 2.

FIG. 6 is a perspective exploded'view of elements shown in FIG. 3.

FIG. 7 is an inverted perspective view of one of the elements shown in FIG. 6.

Referring to FIG. 1, the carbine illustrated includes a wooden stock 1 having a muzzle end portion 2 and a hand guard 3 on said stock with the rear end thereof secured by tongue and groove means, not shown, with both the hand guard and the stock bored to retain barrel 4 which is retained by the breech end in the stock by well known means, not shown. The lock-ing device 5 to be hereinafter described provides adjustable means for retaining the barrel in locked aligned engagement with the stock 1 and the guard 3, which device is secured in a cylindrical bore 14 in the end portion of stock 1 and hand guard 3.

Referring to FIG. 3, the locking device 5 comprises a sleeve 6 having a cylindrical bore therethrough slidably retained on barrel 4 in close relation and having an in- 3,Z8,178 Patented Sept. 28, 1965 "ice tegral wide coaxial flange 7 at the front end thereof and a semi-circular narrow coaxial flange 8 on the rear end thereof better shown in FIGS. 6 and 7.

A collar member 9 has a coaxial bore therethrough 5 slidably retained on flange 7 of the sleeve as shown in FIG. 3, with the rear end thereof having a counter bore 10 therein for retaining, in close proximity, the mated cylindrical outer ends of end portion 2 of the stock 1 and the guard 3.

Referring to FIG. 6, the end portion 2 of the stock 1 has a semi-circular groove 11 in the bore 14 thereof for providing a shoulder for the abutment of the flange 8 as shown in FIGS. 3 and 5.

Referring to FIGS. 3 and 7, a flange 7 has a transverse V groove 12 therein forming an inclined rear cam surface 13 positioned for engagement by the conical point of a set screw 14' threaded through collar 9, as shown.

In operation with the elements assembled as shown in FIGS. 3, 4 and 5, the set screw 14' when tightened will bear against the cam surface 13 in the flange 7 and urge the collar 9 rearward with respect to sleeve 6 by virtue of the engagement of flange 8 in groove 11. Thus the stock 1, guard 3 and the barrel 4 will be retained in secure longitudinal relation since as previously stated the breech end of the barrel is secured in the stock.

It is now apparent that the simple tightening of screw 14 in collar 9 will take up any end play that may develop between the barrel and the stock and hand guard because of the relatively wide range of adjustment of the screw 14' along the inclined surface 13.

It is understood that certain modifications in the construction, utilizing the features above described, are intended to come within the scope of the appended claims.

Having described my invention, I claim:

1. A locking device for a firearm for adjustably retaining the barrel thereof in secure longitudinal alignment with the outer portion of the stock thereof comprising a sleeve member on said barrel in close slidable relation therewith and in a bore in the muzzle end portion of said stock including an integral transverse flange for engaging said stock,

a transverse shoulder in said end portion for abutting engagement of said flange,

a collar means slidably retained on said sleeve member for engaging and abutting said end portion,

a transverse cam surface integral with said sleeve member inclined with respect to the axis thereof,

screw means in said collar means normal to said axis positioned to engage said cam surface and move said collar means and said sleeve member in opposite directions against said end portion and said shoulder respectively for retaining said barrel in predetermined alignment with said stock.

2. A locking device for .a firearm of the character described,

a means forming a firearm stock with a bore in the muzzle end portion thereof for retaining a barrel therein,

a barrel in said bore secured in said stock at the breech and thereof,

a sleeve member slidably positioned on said barrel and positioned in said bore a predetermined distance,

interlock-ing means on said sleeve member and in said end portion for retaining said sleeve member in said bore said predetermined distance,

a collar member slidably retained on said sleeve member and positioned to engage and abut the outer end of said end portion,

screw means operatively associated with said sleeve member and said collar member for moving the latter in a longitudinal direction into abutting engagement with said outer end when rotated whereby said 3 4 barrel is retained in predetermined longitudinal aligna collar slidably retained on the muzzle end of said ment with said stock. sleeve member having a cylindrical counter bore 3. A locking device for a firearm of the character therein adapted and constructed to retain and abut described, said cylindrical portion,

means forming a firearm stock with a bore in the muzzle 5 screw means operatively associated with said oblique end portion for retaining a barrel therein, surface of said sleeve member and said collar for said stock including a hand guard portion joined along moving the latter in longitudinal abutting engagea transverse plane substantially parallel said bore, ment with said cylindrical portion when rotated said stock terminating at the muzzle end thereof in a whereby said barrel is retained in predetermined cylindrical portion coaxial with said bore, 10 longitudinal alignment with said stock. a sleeve member slidably positioned on said barrel and positioned in said bore a predetermined distance, References Clted by the Exammel' interlocking means on said sleeve member and in said UNITED STATES PATENTS end portion for retaining said sleeve member in said 160,935 3/75 Meigs 42 71 bore in said predetermined distance, a transverse 1 I oblique surface in an outer side of said sleeve SAMUEL FEINBERG Primary Exammer' member, BENJAMIN A. BORCHELT, Examiner. 

1. A LOCKING DEVICE FOR A FIREARM FOR ADJUSTABLY RETAINING THE BARREL THEREOF IN SECURE LONGITUDINAL ALIGNMENT WITH THE OUTER PORTION OF THE STOCK THEREOF COMPRISING A SLEEVE MEMBER ON SAID BARREL IN CLOSE SLIDABLE RELATION THEREWITH AND IN A BORE IN THE MUZZLE END PORTION OF SAID STOCK INCLUDING AN INTEGRAL TRANSVERSE FLANGE FOR ENGAGING SAID STOCK, A TRANSVERSE SHOULDER IN SAID END PORTION FOR ABUTTING ENGAGEMENT OF SAID FLANGE, A COLLAR MEANS SLIDABLY RETAINED ON SAID SLEEVE MEMBER FOR ENGAGING AND ABUTTING SAID END PORTION, A TRANSVERSE CAM SURFACE INTEGRAL WITH SAID SLEEVE MEMBER INCLINED WITH RESPECT TO THE AXIS THEREOF, SCREW MEANS IN SAID COLLAR MEANS NORMAL TO SAID AXIS POSITIONED TO ENGAGE SAID CAM SURFACE AND MOVE SAID COLLAR MEANS AND SAID SLEEVE MEMBER IN OPPOSITE DIRECTIONS AGAINST SAID END PORTION AND SAID SHOULDER RESPECTIVELY FOR RETAINING SAID BARREL IN PREDETERMINED ALIGNMENT WITH SAID STOCK. 